into that deadly plane crash in san francisco. After two days of interviews, we're learning more this morning about the pilots on flight 214 and what went wrong in those final seconds for impact. Cecilia vegas is on the ground in san francisco with all of the details. Good morning, cecilia. Reporter: Good morning to you. The scene that investigators are now describing about what happened out here is downright horrific. They say once the pilots realized they were traveling at dangerously low speeds and tried to correct it, it was too late. This new video from investigators shows how massive the destruction was. Chattered debris. A charred door. Nothing left but the burned shell of a plane. This morning, much of the investigation into what happened on asiana's flight 214, seems to be centered on the pilots and the lack of experience in their roles. The pilot flying was new to the jumbo jet. He had never landed a boeing 777 in san francisco. The ntsb now says it was also the first time the pilot teaching him had made a trip as an instructor. And this -- this was the first time that he and the flying pilot that he was instructing, had flown together. Reporter: That landing, investigators describe a nightmare. The tail clipped the seawall at the edge of the runway. The plane did a 360-degree spin. Upon impact, two flight attendants in the back of the plane were ejected, found injured on the side of the runway. Passengers, like this california martial arts group, returning from a visit from south korea, feared the worst. The captain was saying, we have to get out of here. And then, boom, the back end just lifted up. Reporter: And now, new questions about whether the plane's autothrottle, used like a cruise control to maintain a certain speed, was even on. Is there too much dependency on automation? Are we making pilots that are way too concerned about systems and computers rather than the basic aviation skills? Reporter: The one person not answering questions tuesday, asiana's ceo. When he arrived at san francisco's airport, he left through a side door after seeing all of the cameras. As for those pilot, investigators now say that none of the crew were tested for drug or alcohol use postcrash. But investigators say that rule requiring testing for american pilots may not apply to foreign crews. Cecilia, thank you for that.

This transcript has been automatically generated and may not be 100% accurate.

{"id":19624491,"title":"Crash Pilots' Inexperience Center of Investigation","duration":"2:33","description":"The teaching pilot on the 777 that crashed in San Francisco had never made a trip as an instructor.","url":"/GMA/video/plane-crash-san-francisco-asiana-airlines-crash-pilots-19624491","section":"GMA","mediaType":"Default"}